CN104105917B - Vacuum heat insulation materials and manufacture method thereof - Google Patents

Vacuum heat insulation materials and manufacture method thereof Download PDF

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Publication number
CN104105917B
CN104105917B CN201380008960.6A CN201380008960A CN104105917B CN 104105917 B CN104105917 B CN 104105917B CN 201380008960 A CN201380008960 A CN 201380008960A CN 104105917 B CN104105917 B CN 104105917B
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China
Prior art keywords
inorfil
described
silk thread
curve
sheet material
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CN201380008960.6A
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Chinese (zh)
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CN104105917A (en
Inventor
井前宪司
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井前工业株式会社
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Priority to JP2012029321 priority Critical
Priority to JP2012-029321 priority
Application filed by 井前工业株式会社 filed Critical 井前工业株式会社
Priority to PCT/JP2013/052992 priority patent/WO2013121992A1/en
Publication of CN104105917A publication Critical patent/CN104105917A/en
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Publication of CN104105917B publication Critical patent/CN104105917B/en

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Classifications

    • DTEXTILES; PAPER
    • D04BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04HMAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/42Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/4209Inorganic fibres
    • DTEXTILES; PAPER
    • D04BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04HMAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/42Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/4391Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece characterised by the shape of the fibres
    • DTEXTILES; PAPER
    • D04BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04HMAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/54Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving
    • D04H1/559Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving the fibres being within layered webs
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16LPIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L59/00Thermal insulation in general
    • F16L59/06Arrangements using an air layer or vacuum
    • F16L59/065Arrangements using an air layer or vacuum using vacuum

Abstract

The vacuum heat insulation materials that a kind of quality stability is high is provided, though its binding agent avoiding using the problem that can produce volatilization under vacuum, it is also possible to keep chip shape, and the thermal insulation at initial stage can be kept for a long time.The vacuum heat insulation materials of the present invention includes that the duplexer (10) of inorganic fiber sheet material (1) and vacuum seal the housing material (11) that this duplexer is formed, wherein, in described inorganic fiber sheet material, including the inorfil tow random dispersion of the curve-like inorfil silk thread that Cutting Length (L) is 3 12mm, and being engaged with each other at least partially of described inorfil tow.

Description

Vacuum heat insulation materials and manufacture method thereof

Technical field

The present invention relates to a kind of vacuum for refrigerator, freezer, couveuse, water heater etc. exhausted Hot material, more specifically, relates to be manufactured paper with pulp the inorganic fiber sheet material that method manufactures by wet type Vacuum heat insulation materials that duplexer housing material vacuum is sealed to form and manufacture method thereof.

Background technology

As the adiabator for refrigerator, freezer, couveuse, water heater etc., use absolutely The vacuum heat insulation materials of hot excellence.As vacuum heat insulation materials, used following formation in the past Material: pressurization compressed glass wool, is accommodated in gas barrier property by the block of glass wool of bonding manufacture excellent simultaneously In different container, seal (such as, JP 60-14695 public affairs by being evacuated in container Report: patent documentation 1).

In general, it is believed that the deviation of the fibre length of glass cotton is big, particularly with centrifuging, fire Micro-containing referred to as solids (shot) (unfiberized shot-like particle) in the glass cotton that flame method etc. manufacture Granular material, the solids that particle diameter is big becomes the reason producing big pore in adiabator, this Outward, if the space of adiabator existing multiple solids, then due to the convection current at gas in container Heat transfer etc., become the reason that thermal insulation declines.Furthermore it is known that for improving thermal insulation, by inorganic Fiber is vertically oriented relative to conduction of heat direction is useful.

Thus, such as, JP 2005-265038 publication (patent documentation 2) proposes following Scheme: substitute the block of glass wool that pressurization compressed glass wool obtains, use and glass fibre is carried out The duplexer of the inorganic fiber sheet material that wet type is manufactured paper with pulp, additionally, as starting material inorganic fiber, at glass The containing ratio of the solids contained in glass cotton is set to below 0.1 mass %.

But, in glass cotton, the deviation of the fibre length contained is big, possibly together with fibre length Long fiber, the bending sometimes of this fiber, distorts sometimes.Therefore, glass cotton is used to make During for raw material, wet type is i.e. used to manufacture paper with pulp, it is also difficult to be made thin inorganic fiber sheet material, and absolutely The raising of hot property is restricted, such as, No. 4713566 publications of patent (patent documentation 3), No. 4726970 publications of patent (patent documentation 4) and No. 4772887 publication (patent documentations of patent 5) propose the inorfil utilizing continuous filament yarn (filament) method manufacture is cut into length-specific The scheme that the inorfil (chopped silk) that the linearity that obtains is high uses as raw material.

Specifically, patent documentation 3-5 proposes to use and fiber diameter is 3-15 μm, is put down Equal fibre length is 3-15mm, linearity is high, the inorfil of circular cross-section is manufactured paper with pulp through wet type Non-woven fabrics is as the scheme of inorganic fiber sheet material.

Prior art literature:

Patent documentation

Patent documentation 1: JP 60-14695 publication

Patent documentation 2: JP 2005-265038 publication

Patent documentation 3: No. 4713566 publications of patent

Patent documentation 4: No. 4726970 publications of patent

Patent documentation 5: No. 4772887 publications of patent

Summary of the invention

The problem that invention is to be solved

Owing to the high chopped silk of the linearity used as raw material is in step of manufacturing paper with pulp in patent documentation 3-5 Be difficult in Zhou to produce between fiber winding, therefore binding agent is necessary.Patent documentation 3-5 Use the water-soluble polymer such as vinal or polyvinyl alcohol particle as binding agent.

But, if organic bond as above exposes under condition of high vacuum degree for a long time, then can Gradually volatilizing, the volatile ingredient of organic bond causes vacuum to decline, and becomes vacuum heat insulating material The material reason that thermal insulation declines in time.

Patent documentation 3 is by containing in the non-woven fabrics of removing stacking before core material vacuum seals Binding agent, patent documentation 5 by use liquid adhesive as binding agent (patent documentation 5), Suppress the decline of the thermal insulation that binding agent causes.

But, in patent documentation 3-5, use the situation of inorfil when vacuum is high Under, due to relevant with the winding between suppression fiber, if therefore binding agent is very few, then it is difficult to protect Hold the chip shape of inorganic fiber sheet material.Even if removing binding agent additionally, add by heating etc. Step, in the case of inorganic fiber sheet material overlap, it is also difficult to the inorfil within Chu Quing The binding agent of sheet material, additionally causes the vacuum heat insulation materials that additional binding agent removing step causes The new problem of cost up.

The present invention makes in view of the foregoing, its object is to provide a kind of steady quality Property high vacuum heat insulation materials, even if it avoids using under vacuum can produce volatilization problems etc Binding agent, it is also possible to keep chip shape, and the thermal insulation at initial stage can be kept for a long time.

The method solving problem

The vacuum heat insulation materials of the present invention includes that the duplexer of inorganic fiber sheet material and vacuum seal and be somebody's turn to do The housing material that duplexer is formed, wherein, in described inorganic fiber sheet material, comprises cutting Length (L) is the inorfil tow random dispersion of the curve-like inorfil silk thread of 3-12mm, And being engaged with each other at least partially of described inorfil tow.

Described curve-like inorfil silk thread preferably by formed the silk thread of waveform that is made up of curve with The mode in the 1/2-1 cycle forming described waveform forms with the cut-space of 3mm-12mm, institute The peak portion height (2 times of values of amplitude) stating curve-like inorfil silk thread is preferably 1-6mm.

Described inorfil tow is to be obtained, institute with the cutting of 3mm-12mm length by bulky yarn State heart yearn that bulky yarn contains multifilament (multifilament) and formed on the surface of this heart yearn The sheath line of the multifilament enclosed and/or relax and tangle, described curve-like inorfil silk thread preferably passes through Cutting constitutes the multifilament of described sheath line and obtains, and described curve-like inorfil silk thread is preferably tool There are looping or the silk thread of curve (curve) of 6mm-25mm length.Additionally, constitute described heart yearn Multifilament be preferably section profiled fiber.

The fibre diameter of described inorfil silk thread is preferably 0.5-15 μm, described inorfil silk Line is preferably glass fibre.Additionally, the containing ratio of described curve-like silk thread is preferably described inorganic More than the 15% of fiber wire entirety.

Described inorganic fiber sheet material is preferably by copying the dispersion liquid wet type of described inorfil silk thread Make and obtain.

The manufacture method of the vacuum heat insulation materials of the present invention, is the stacking containing inorganic fiber sheet material Body and vacuum seal the manufacturer of the vacuum heat insulation materials of the housing material that this duplexer is formed Method, it is characterised in that: including material liquid modulation step, stirring is containing inorfil tow and divides The fiber suspension of powder and modulate fiber dispersion;And papermaking procedure, the described fibre that will obtain Dimension dispersion liquid carries out wet type and manufactures paper with pulp and make inorganic fiber sheet material,

Described inorfil tow uses the nothing formed by bulky yarn with the cutting of 3mm-12mm length Organic fiber silk thread, heart yearn that described bulky yarn contains multifilament and being formed on the surface of this heart yearn The sheath line of the multifilament enclosed and/or relax and tangle, or use the 1/2-1 of the waveform being made up of curve Cycle wavelength and the inorfil silk thread that wavelength is 3mm-12mm.

The effect of invention

The vacuum heat insulation materials of the present invention because be substantially free of can make what vacuum declined to evaporate into Point, it is possible to keep the vacuum state of height for a long time, but also can stably provide excellent Different thermal insulation.Additionally, the manufacture method of the vacuum heat insulation materials as the present invention, the present invention Manufacture method convenient, productivity ratio is excellent.

Accompanying drawing explanation

Fig. 1 is the schematic diagram of the composition of the vacuum heat insulation materials for the present invention is described.

Fig. 2 is the schematic diagram of the manufacture example for waveform figuration line is described.

Fig. 3 is the schematic diagram of the manufacture example for waveform figuration line is described.

Fig. 4 is the figure of the tooth pitch for gear is described.

Fig. 5 is the figure of the structure for the inorfil silk thread from waveform figuration line is described.

Fig. 6 is the figure for the inorfil silk thread from waveform figuration line is described.

Fig. 7 is the schematic diagram of the composition for bulky yarn is described.

Fig. 8 is the schematic diagram of the composition for the silk thread from bulky yarn is described.

Fig. 9 is the schematic diagram engaged for illustrative graph shape silk thread.

Figure 10 is the schematic diagram of the joint for the inorfil tow from bulky yarn is described.

Figure 11 is the inorfil for the silk thread bundle in the case of using containing inorganic bond is described The schematic diagram of sheet material.

Detailed description of the invention

As it is shown in figure 1, the vacuum heat insulation materials of the present invention is containing inorganic fiber sheet material 1,1 ... The duplexer 10 of stratification and vacuum seal the housing material 11 of this duplexer 10 formation Vacuum heat insulation materials.

Further, in described inorganic fiber sheet material 1, containing Cutting Length (L) 3-12mm's The inorfil tow of curve-like inorfil silk thread is in random dispersion, and described inorfil Being engaged with each other at least partially and form flake of tow.

Described curve-like inorfil silk thread can be by with length-specific waveform curve (two Dimension curve) long filament obtain, it is also possible to by the three-dimensional curve with length-specific cutting auger sample Long filament obtain, it is also possible to by there is the song of looping or curve randomly with length-specific cutting Wire silk thread obtains.Representational enumerate: by by length that figuration is the waveform being made up of curve Silk (waveform figuration line) in the way of the 1/2-1 cycle forming described waveform with 3mm-12mm The silk thread (from the silk thread of waveform figuration line) of cut-space, with by the heart yearn containing multifilament With on the surface of this heart yearn, form looping and/or the bulky yarn of the sheath line of multifilament relaxing and tangling Silk thread (from the silk thread of bulky yarn) with the cutting of length 3-12mm.

In structure sheet inorfil tow, described curve-like silk thread can only be formed with thin slice Necessary amount is contained.The containing ratio of curve-like silk thread is according to the kind (chi of curve-like silk thread Very little, shape etc.) it is more than the 15%, preferably more than 50% of inorfil silk thread entirety, more It is preferably more than 70%, the most entirely curve-like silk thread.

Constitute the inorfil useable glass fiber of silk thread, basalt fibre, silicon dioxide fibre, The ceramic fibres etc. such as alumina fibre, preferably glass fibre.Also use be can be combined polytype Inorfil.Additionally, in the case of congener inorfil, such as in glass fibre, Polytype glass fibre that composition different be can be combined.

The fiber diameter of inorfil silk thread is preferably 0.5-15 μm.If more than 15 μm, then The rigidity of inorfil is high, readily facilitates the conduction of heat between inorganic fiber sheet material.On the other hand, If less than 0.5 μm, then rigidity is too low, exists and is difficult to play holder work by the joint of fiber Tendency.Although somewhat deteriorating for thermal insulation during 0.5-3 μm, but when low rigidity is to bending The installation transfiguration at position etc. is easy, for improving heat-insulating property during 3-15 μm further.

Additionally, containing in the case of polytype inorfil silk thread, the most each leisure is above-mentioned In the range of.

Below with regard to representational inorfil silk thread (from the silk thread of waveform figuration line and from swollen The silk thread of pine yarn) illustrate.

< is from the inorfil tow > of waveform figuration line

(1) waveform figuration line and manufacture method thereof

Waveform figuration line is the silk thread of the waveform that forming curves is constituted on the long filament of linearity.

Here the waveform that curve is constituted refers to not include square wave, the triangular wave etc. that straight line constitutes. Additionally, the waveform that what is called is formed with two-dimensional curve (plane curve), refer to not include passing through The curve of this kind of three-dimensional that the 1/2-1 rotating part of spiral obtains.The shape of waveform limits the most especially Fixed, it is not limited to sine wave, uses by sin, cos, involute curve etc. are carried out various groups Close all objects of the waveform described.

The long filament constituting waveform figuration line is preferably used multifilament.The multifilament of glass fibre is to make from molten The fibers melt liquid melting stove outflow obtains by offering the nozzle in the multiple holes forming multifilament.

The method forming waveform on linearity long filament is not particularly limited, and is glass at inorfil In the case of glass fiber, can carry out by between 2 gears by making long stapled long filament.Tool Body ground, can enumerate: as in figure 2 it is shown, heating linearity long filament 2 be passed to gear 3,3 it Between method;As it is shown on figure 3, the linearity long filament 2 ' carrying out melt spinning from nozzle 4 is existed Pass through before cooling and solidifying between gear 3 ', 3 ', the method cooled down afterwards;Heat long stapled length Silk so that it is by the method etc. between gear.Any method all can by make linearity long filament 2, 2 ' near the melt temperature being heated to glass fibre by between gear, and form tool There is the long filament (waveform figuration line) 5 of waveform.

The shape of the gear used in waveform figuration is not particularly limited, and purpose is for obtaining curve-like Inorfil silk thread.It is not only the shape by regulating gear, by regulation Fig. 2, Fig. 3 In the distance of (between 3-3,3 '-3 ' between) or the rate of delivery etc. of long filament between 2 gears, it is also possible to Change the amplitude of wavy curve, waveform.

As the gear used, such as in gear as shown in Figure 4, preferential employing 1-3 mould, Tooth pitch 3-12mm.By this mode, the wavelength that can form wavelength 1/2-1 cycle portions is The shape of the waveform of 3-12mm.

(2) curve-like inorfil silk thread

Curvilinear inorfil silk thread is the interval with 3mm-12mm, preferred 4-9mm Interval, preferably in the way of forming the 1/2-1 cycle of described waveform, cutting waveform figuration as above Line and obtain.

Such as, in the case of the position cutting of arrow A, the B that figure 5 illustrates, in Fig. 5 Between A-A, between (1/2 cycle), B-B, (1 cycle) is Cutting Length L, is equivalent to this The wavelength of curve-like inorfil silk thread.

Additionally, cutting position is not limited to the peak portion of waveform, the peak position of valley, can be with peak Portion, the arbitrary position of valley are starting point, cut with every 1/2-1 periodic wave length.Such as Fig. 6 Shown in, in the case of wavelength was 1/2 cycle, can be the peak to peak portion of valley from waveform The waveform (with reference to Fig. 6 (a)) at peak, it is also possible to simply the valley of waveform or the waveform in peak portion (are joined According to Fig. 6 (b)).Additionally, when the situation that wavelength was 1 cycle, can be containing peak portion and The waveform (with reference to Fig. 6 (c)) of valley, it is also possible to be valley at two axils in valley or peak portion Or the ripple of half peak height in peak portion connects the waveform (with reference to Fig. 6 (d)) formed.Additionally, at figure In 6, the waveform that solid line represents is wire section, and dotted line is the reference section for describing waveform.

Although can be arbitrary situation (waveform), but the overwhelming majority be the curve-like silk thread of waveform, Its wavelength is in the 1/2-1 cycle and be 3mm-12mm.

If Cutting Length (wavelength) L is too short, then it is difficult to by making inorganic fiber sheet material of manufacturing paper with pulp. On the other hand, if Cutting Length (wavelength) L is elongated, then exist due to inorfil silk thread mistake Long, flexibility decrease, it is difficult to keep curvilinear tendency, thus the most preferred.

The peak portion height H of curve-like inorfil silk thread depends on the 1/2-1 selecting continuous print waveform The position in cycle, is 1 times of amplitude size to the scope of 2 times of amplitudes.The song that the present invention uses Wire inorfil silk thread preferably has the waveform that amplitude is 0.5-3mm, more preferably 0.5-2mm. Accordingly, because the peak portion height H of curve-like inorfil silk thread has the 1/2-1 cycle of waveform The wavelength of part, so according to the scope of the relevant position of waveform, preferably 1-6mm, more preferably 1-4mm。

Generally 10-100 root waveform figuration line is tied up, utilize guillotine etc. to pass through to cut It is broken into specific length and carries out the cutting of waveform figuration line.

It is typically many inorganic fibres by obtain with the waveform figuration line of specific interval cutting multifilament The dimension bundles of tow of silk thread shape.Owing to this tow is can be with the state of 11 independent dispersion Tow, so before the manufacture being supplied to inorganic fiber sheet material or at inorganic fiber sheet material In the appropriate step manufactured, preferably carry out in the way of can being separated into single inorfil silk thread Dissociate and use.

Additionally, the material of inorganic fiber sheet material is using the curve-like silk thread from waveform figuration line In the case of, it is not limited to waveform, wavelength, a kind of curve-like silk thread that peak portion height is the most equal Aggregation.Be used as by change the kind of waveform figuration line, cutting position, will have The nothing that different waveform, wavelength, polytype curve-like silk thread of peak portion height combine Organic fiber tow.

< is from the inorfil tow > of bulky yarn

Because the inorfil tow from bulky yarn is by the heart yearn containing multifilament with at this heart yearn Surface on the bulky yarn cutting of the sheath line of multifilament tangled and obtain, so generally-straight shape Silk thread and curvilinear silk thread combination aggregation.

Here, the silk thread of linearity, except straight line silk thread completely, also refers to have and curve-like silk Line can distinguish the silk thread of the high grazing of degree.

(1) bulky yarn and manufacture method thereof

For bulky yarn, such as, as it is shown in fig. 7, using multifilament threads is heart yearn 6, the sheath of multifilament Line 7 is formation looping or lax around this heart yearn 6, and tangles.Additionally, may also be structure The multifilament becoming heart yearn and the multifilament constituting sheath line form looping or lax, and tangle and (do not carry out Diagram).

As such bulky yarn, on multifilament lines, implement fluid disorderly for example, as it is known that use What stream processed is referred to as so-called TASLAN textured yarn or the bulky yarn of buiky yarn, covers with double-contracting Yarn machines etc., by decoration fancy yarn etc. manufactured by line cladding rotation on heart yearn.

This bulky yarn such as, can manufacture with the following method.

That is, make from the fibers melt liquid of melting furnace outflow by offering the number of composition multifilament The nozzle in hole, is extruded as the multifilament lines of heart yearn, alignment.From the nozzle at composition heart yearn Other nozzles being arranged around are extruded into the long filament of sheath line.By on the multifilament forming sheath line Jet fluid (usually air), forms looping or lax, and becomes entangled in formation heart yearn On multifilament lines.From the viewpoint of forming multiple minimum loopings, relaxing, nozzle preferably makes With fluid sinuous flow nozzle or so-called TASLAN nozzle.

Or also many multifilament threads can be carried out fluid simultaneously and confuse process, afterwards, by extending And formed.By change quantity delivered between 2 multifilament threads confusing process to be fed to fluid, Or change fluid confuses the air pressure used in process, looping or lax degree can be changed.

The inorfil constituting heart yearn and the inorfil constituting sheath line can be congener inorganic Fiber, it is also possible to be different types of inorfil.

Additionally, constitute the fiber diameter (d1) of the inorfil of heart yearn and constitute sheath line The fiber diameter (d2) of inorfil can be the same or different.Preferably, constitute The fiber diameter (d2) of the 2nd inorfil of sheath line is to constitute the 1st inorganic fibre of heart yearn The fiber diameter (d1) (that is, d2≤d1) below of dimension.

Additionally, the long filament used in heart yearn to be not limited to cross section circular, it is also possible to be section triangle, The profiled filaments such as cross section is star-like, cross section Y type, cross section c-type.By using odd-shaped cross section, can Improve the winding between inorfil so that binding agent can be need not.Additionally, use abnormity to cut The tendency that thermal insulation is excellent is there is during face length silk.

The fiber diameter of the inorfil constituting heart yearn, sheath line is preferably respectively 0.5-15 μm. If more than 15 μm, then the rigidity of inorfil is high, readily facilitates the heat biography between inorganic fiber sheet material Lead.On the other hand, if less than 0.5 μm, rigidity is too low, there is the winding being difficult to by fiber Play the tendency of holder effect.Although when 0.5-3 μm, thermal insulation slightly deteriorates, but takes advantage of Low rigidity and installation to positions such as bendings becomes easy, can improve further during 3-15 μm Heat-insulating property.

(2) from the inorfil silk thread of bulky yarn

Above-described bulky yarn is cut to 3mm-12mm, preferably 4-9mm, obtains inorganic Fibre bundle.In Fig. 7 and Fig. 8, L is Cutting Length.Therefore, heart yearn the silk thread obtained Length almost equal with Cutting Length L, but the length ratio of the curve-like silk thread obtained by sheath line Cutting Length L is longer.Specifically, although depend on the kind of bulky yarn, but with In the case of the length cutting bulky yarn of 3mm-12mm, it is usually formed a length of 3mm-12mm Linearity silk thread and the curve-like silk with looping or curve that fibre length is 6mm-25mm The combination of line.

Specifically, as shown in Figure 8, those (Fig. 8 (a)) being wrapped on heart yearn 6 except sheath line 7 In addition, be also mixed with sheath line 7 looping 7a remaining (Fig. 8 (b)) those, sheath line on end A part for the looping of 7 is untied and remaining those (Fig. 8 (c)) etc..Therefore, if cutting Length L is too short, then be difficult to the curve-like silk thread obtaining being adapted to engage with, it is difficult to by making of manufacturing paper with pulp Inorganic fiber sheet material.On the other hand, the grazing of the long filament owing to using in heart yearn is high, if cutting Cut length L elongated, then the linearity silk thread existed angularly relative to direction, face is to poke The state in multiple inorganic fiber sheet material faces exists, and is susceptible to conduction of heat, institute between multiple sheet materials With the most preferred.

Manufacture method > of < inorganic fiber sheet material

Inorganic fiber sheet material is containing inorfil tow and the fibre of dispersant by stirring, dissociation Dimension suspension, manufactures paper with pulp fiber dispersion (material liquid) wet type obtained and prepares.

As inorfil tow, the tow containing curve-like silk thread of additionally manufacture can be used, But using the described tow from waveform figuration line or the tow from bulky yarn is just on manufacturing Profit.Additionally, compared with the situation of the aggregation using self-existent silk thread, there is joint The higher tendency of existence ratio of silk thread, thus intensity, the stability as sheet material improves.

(1) modulation of material liquid

Material liquid (fiber dispersion) can be by adding inorfil tow and dispersant to work For in the water of disperse medium, stir, dissociate and prepare.Situation at the tow obtained by multifilament Under, preferably it is dissociated into independent inorfil silk thread in the stage of this stirring.Stirring, dissociation phase When in the mashing step of papermaking, available refiner (refiner) etc. is carried out, it is preferably set to multiple Silk is dissociated into the treatment conditions (temperature, rotating speed, pressure etc.) of the degree of independent fiber, with Glass fibre is made not lose.

Described dispersant is can make the described cellosilk being made up of in whipping step described later multifilament Shu Rongyi is dissociated into independent fiber, and in water, the most scattered mode is allocated into further.Make The nonionic surfactant of such as polyalkylene glycol fatty acid esters type can be used for dispersant Deng.

Dispersant is not particularly limited, it is usually preferred to coordinate relative to fiber wire 100 mass parts 0.5-2 mass parts.

Using in the case of the inorfil tow of waveform figuration line, because nearly all Silk thread be all curve-like silk thread, so material liquid is formed multiple curve-like inorfil silk thread Random dispersion, and at least some of curve-like inorfil silk thread is inorganic with other curve-like The state that fiber wire engages.

Additionally, using the inorfil silk thread from bulky yarn as the feelings of inorfil silk thread Under condition, in the modulation step of material liquid, the sheath line of fiber wire is untied from heart yearn, and, Constitute sheath line, the multifilament of heart yearn is dissociated into independent fiber.Therefore, in material liquid, formed and The inorfil silk thread relatively high from the grazing that the fibre length of heart yearn is 3-12mm and from The state of the curvilinear inorfil silk thread mixing of sheath line, this curvilinear inorfil silk thread Be fibre length be about 6-25mm, remaining plays loop-shaped or implements so-called to wave etc. The state of stample fiber.And, it is believed that, from the curve of the curve-like silk thread of sheath line Formed holder, from heart yearn linearity silk thread and from sheath line curvilinear silk thread with The state dispersion be wound around, physically hitched.That is, formed with linearity silk thread and curve-like silk thread The scattered state of state of (branching) changed by microfilament (fibril).

Replace the fibre bundle from bulky yarn, such as, it is contemplated that use prepares a length of respectively The linearity silk thread of 3mm-12mm and a length of 6mm-25mm have looping or curve Curve-like silk thread, the material liquid coordinate, modulated.But, usually, obtain this warp The curve-like silk thread of about the 6-25mm length of stample fiber is not easy on manufacturing, additionally, Make self-existent curve-like silk thread with straight by stirring under conditions of not losing at glass fibre Wire silk thread by formed branched in the way of be wound around substantially difficulty.Go out from such reason Send out, use meaningful from the tow of bulky yarn.

In material liquid modulation as described above, curve-like inorfil silk thread is mixed with respective independence Those those engaged each other with silk thread scattered.

In the case of the inorfil tow from waveform figuration line, can be such as Fig. 9 (a) (b) Mode be wound around.Fig. 9 (a) illustrates and twines between the inorfil silk thread that wavelength is 1 cycle portions Around situation, Fig. 9 (b) illustrates and twines between the inorfil silk thread that wavelength is 1/2 cycle portions Around situation.

As from the inorfil silk thread of bulky yarn, at linearity inorfil silk thread and song In the case of the mixture of wire inorfil silk thread, as shown in Figure 10, inorganic by linearity Fiber wire 8 is joined on curve-like inorfil silk thread 9, and linearity silk thread also can be as silk A part for bundle engages.In this, by using from the silk thread of heart yearn or from sheath The chopped silk of the bulky yarn that the silk thread of line is wound around, is readily obtained possibly together with linearity silk thread, winding Become the dispersion liquid of branched inorfil tow.By such winding, though not bonding Agent, it is possible to make the overall thin layer inorganic fiber sheet material upwardly-directed in face side.

It is as noted previously, as in dispersion liquid between curve-like inorfil silk thread or curve-like is inorganic Fiber wire and linearity inorfil silk thread are wound around, and therefore also can be formed even without binding agent Flake, but as required, it is possible to add and coordinate inorganic bond.

Described inorganic bond is that silica sol, alumina sol etc. have adhesive thing Matter, and silicon dioxide or aluminium oxide be preferably used and constitute chain, beads shape, the stablizing of needle-like The silicon dioxide of offspring or aluminium oxide.Specifically, containing offspring in material liquid Major diameter is that the silicon dioxide about 0.01 μm-2 μm or aluminium oxide are as colloid scattered in water Colloidal sol.This inorganic bond can be stably adhered to fiber surface, it is possible to prevents evacuation Time disperse, dispersing in the container of vacuum heat insulation materials.So, the present invention uses Inorganic bond in terms of being difficult at inorganic fiber sheet material to be scattered or disperse with in glass cotton It is mixed into chopped fiber, solids difference.

Additionally, the content of described inorganic bond particle is relative to 100 mass parts inorfil silks Line, below preferably 2 mass parts, below more preferably 1 mass parts, more preferably 0.5 Below mass parts.

(2) wet type is manufactured paper with pulp

Manufacture paper with pulp carrying out wet type by the material liquid of above-mentioned modulation, sheet.The method that wet type is manufactured paper with pulp (copy paper step) is not particularly limited, and such as, carries out by the following method.

Manufacture paper with pulp usual wet end (wire part) and drying section combination system carry out.

Specifically, not as restriction, the material liquid of modulation is sprayed to wet end from stock inlet, Online mobile, water is to outflow off the net, dehydration simultaneously, suction further, dehydration, is formed aqueous Network.It follows that squeeze between press roller and felt rug at pressing part, be dehydrated, at drying section Evaporation drying moisture, obtains inorganic fiber sheet material further.Wet end can use fourdrinier paper machine, The known paper machines such as short net paper machine, inclination net type paper machine.

The basic weight of inorganic fiber sheet material preferably employs 30-600g/m2.Less than 30g/m2Time, because of Become big for the diameter in space present in inorganic fiber sheet material, the shadow to the pyroconductivity of gas Ring and become big, so there is the tendency declined as vacuum heat insulation materials heat-insulating property.On the other hand, If more than 600g/m2, then the drying efficiency manufactured during non-woven fabrics by glass fibre declines, and produces Rate declines, thus the most preferred.

Inorganic fiber sheet material fabricated as described above, such as, is using inorganic from bulky yarn In the case of fibre bundle, as shown in figure 11, from the inorfil silk thread of linearity of heart yearn 8 and curvilinear inorfil silk thread 9 from sheath line be wound around, this is external containing inorganic bond In the case of, inorganic bond 20 is to be attached to linearity inorfil silk thread 8 and/or curve-like Inorfil 9 surface on mode, formed flake.

In inorganic fiber sheet material fabricated as described above, constitute the curve-like inorfil of sheet material Most of random dispersion of silk thread forms plane.But, the curve-like inorfil silk of a part Line is by being wound around existence in the way of crosslinking in described plane or between the plane of stacking.From and bent From the point of view of the relation of the wavelength of wire inorfil silk thread, when not cross-linking multiple layers, due to this It is few to there is ratio in winding, so resulting from the decline of thermal insulation of the conduction of heat etc. caused by winding Little.And the amount of binder needed for can being reduced by winding.Additionally, the inorganic fibre of a part Dimension silk thread can to exist in the way of plane is prominent, but from curve-like inorfil silk thread From the point of view of the relation of peak portion height H, even if the part at silk thread is prominent from inorganic fiber sheet material surface In the case of going out, ledge pokes multiple inorganic fiber sheet materials of stacking the most hardly.Cause This, result is: at the inorfil sheet of the element of the vacuum heat insulation materials as the present invention In material, the existence of the inorfil silk thread of winding, from the prominent curve-like inorfil silk of plane The existence of line, compared with the decline of the thermal insulation that winding with silk thread, prominent etc. causes, causes subtracting The effect of few required amount of binder is bigger, it is thus possible to realize the raising of thermal insulation.

In the case of the inorfil silk thread of bulky yarn, do not contain only curve-like silk thread, Possibly together with linearity silk thread.But, due to the joint of linearity silk thread Yu curve-like silk thread, deposit In the tendency that suppression orients with the angle vertical with direction, face.And owing to curve-like silk thread will Curling, therefore be difficult to the angle orientation vertical with direction, face, but with the length direction edge of fiber The mode thickness direction orients.Therefore, even if will be from linearity silk thread or curve-like silk thread In the case of inorganic fiber sheet material surface is prominent, poke the multiple inorganic fibre of stacking the most hardly Dimension sheet material, and use the situation of the inorfil tow from waveform figuration line similarly, result Be the winding with silk thread, highlight etc. causes compared with the decline of thermal insulation, causes reducing required gluing The effect of mixture amount is bigger, it is thus possible to realize the raising of thermal insulation.

The manufacture > of < vacuum heat insulation materials

(1) manufacture of duplexer

By inorganic fiber sheet material 1 stacking fabricated as described above for multi-disc, cambium layer stack 10.Layer The preparation of stack only stacking, compression inorganic fiber sheet material.Prominent from the face of inorganic fiber sheet material The looping of the 2nd inorfil from sheath line gone out or a lax part are relative to the nothing of stacking Organic fiber sheet material, can work as holder.

Can make as the fiber that holder uses between the inorganic fiber sheet material of stacking, to carry out heat biography Lead, but usually, by with the contacting or at the inorfil of stacking of the inorganic fiber sheet material of stacking Conduction of heat that between the fiber of sheet material, in gap, embedding degree as holder causes, thermal insulation Decline and do not become problem.

(2) housing material

Housing material 11 is the material that the film that gas barrier property is excellent is made pouch.As gas barrier property Excellent film, generally, by gold such as ethylene-vinyl alcohol copolymer resin film excellent for gas barrier property, aluminum Belong to the evaporation metal forming such as film or aluminum to use as intermediate layer, two surface uses stacking height The stacked film of the thermoplastic resin films such as density polyethylene, polypropylene, polyamide membrane.

In closing the bag on three limits of described stacked film, accommodate duplexer 10 fabricated as described above, After evacuation, by by empty limit thermal welding, closing, thus vacuum seals.

For keeping initial stage heat-insulating property and the heat-insulating property in time of vacuum heat insulation materials, outsourcing In dress, in addition to duplexer, also can enclose the getter such as adsorbent, moisture adsorbent.

Even if the vacuum heat insulation materials with composition as above does not exist vacuum, height also can volatilize Organic bond, the micropartical dispersed, chopped fiber, it is thus possible to keep the exhausted of initial stage for a long time Thermal characteristics.

Industrial utilizability

The vacuum heat insulation materials of the present invention, does not contains in the duplexer constituting adiabator main body Can volatilize, the organic bond of convection current, microgranule, thus the deterioration that thermal insulation is in time tails off. Therefore, can be used as needing the adiabator of the machine of thermal insulation for a long time, highly.The present invention Manufacture method can be used as the manufacture method of vacuum heat insulation materials of the present invention.

Description of reference numerals

1 inorganic fiber sheet material

7 binding agents

2,2 ' linearity long filaments

3,3 ' gears

5 waveform figuration long filaments

6 heart yearns

7 sheath lines

8 from the silk thread of heart yearn

9 from the silk thread of sheath line

10 duplexers

11 housing materials

20 binding agents

Claims (8)

1. vacuum heat insulation materials, duplexer and vacuum including inorganic fiber sheet material seal this stacking The housing material that body is formed, wherein,
The inorganic fibre of curve-like in described inorganic fiber sheet material, containing Cutting Length 3-12mm Tie up silk thread or there is the looping of 6mm-25mm length or the curve-like inorfil silk thread of curve Inorfil tow random dispersion, and described inorfil tow at least some of the most each other Engaging, the curve-like inorfil silk thread of wherein said Cutting Length 3-12mm is to be endowed By the long filament of the waveform shape that curve is constituted in the way of the 1/2-1 cycle forming described waveform Form with the cut-space of 3mm-12mm, described in have 6mm-25mm length looping or The curve-like inorfil silk thread of curve is to be cut with the interval of length 3mm-12mm by bulky yarn Cutting and obtain, described bulky yarn contains heart yearn and the formation looping on the surface of this heart yearn of multifilament And/or the sheath line of the multifilament relaxing and tangling, the Cutting Length of the multifilament constituting described sheath line is 3mm-12mm。
2. vacuum heat insulation materials as claimed in claim 1, wherein has been assigned described by song Line constitute waveform shape long filament by formed described waveform the 1/2-1 cycle in the way of with The Cutting Length of the cut-space of 3mm-12mm is the curve-like inorfil of 3-12mm 2 times of values of the peak portion height of silk thread, i.e. amplitude are 1-6mm.
3. vacuum heat insulation materials as claimed in claim 1, wherein said inorfil tow The fiber diameter of inorfil silk thread is 0.5-15 μm.
4. the vacuum heat insulation materials as described in claim 1,2 and 3 any one, described inorganic The inorfil silk thread of fibre bundle is glass fibre.
5. the vacuum heat insulation materials as described in claim 1,2 and 3 any one, described inorganic Fibre sheet material is to obtain by the dispersion liquid wet type of described inorfil tow being manufactured paper with pulp.
6. the vacuum heat insulation materials as described in claim 1,2 and 3 any one, described curve The containing ratio of shape inorfil silk thread is whole inorfil silk threads of described inorfil tow More than 15%.
7. the manufacture method of inorganic fiber sheet material, described inorganic fiber sheet material is for containing described nothing The vacuum that the duplexer of organic fiber sheet material and vacuum seal the housing material that this duplexer is formed is exhausted Hot material, described manufacture method is characterised by, including:
Material liquid modulation step, stirring is containing inorfil tow and the fiber suspension of dispersant And modulate fiber dispersion;With
Copy paper step, wet type manufactures paper with pulp the described fiber dispersion obtained and makes inorganic fiber sheet material,
Described inorfil tow is in 1/2-1 cycle of waveform and the wavelength being made up of curve Tow for the curve-like inorfil silk thread of 3mm-12mm.
8. the manufacture method of inorganic fiber sheet material, described inorganic fiber sheet material is for containing described nothing The vacuum that the duplexer of organic fiber sheet material and vacuum seal the housing material that this duplexer is formed is exhausted Hot material, described manufacture method is characterised by, including:
Material liquid modulation step, stirring is containing inorfil tow and the fiber suspension of dispersant And modulate fiber dispersion;With
Copy paper step, wet type manufactures paper with pulp the described fiber dispersion obtained and makes inorganic fiber sheet material,
As described inorfil tow, use and bulky yarn is cut with the length of 3mm-12mm Obtained by the tow of inorfil silk thread, described bulky yarn contains the heart yearn of multifilament and at this heart yearn Surface on form looping and/or the sheath line of multifilament relaxing and tangling.
CN201380008960.6A 2012-02-14 2013-02-08 Vacuum heat insulation materials and manufacture method thereof CN104105917B (en)

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JP6025969B2 (en) * 2013-04-05 2016-11-16 三菱電機株式会社 Vacuum heat insulating material, heat insulation tank equipped with the same, heat insulation body, and heat pump water heater
JP6359206B1 (en) * 2016-11-10 2018-07-18 三菱電機株式会社 Vacuum heat insulating material, vacuum heat insulating material manufacturing method, and vacuum heat insulating material manufacturing apparatus

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JPH09229290A (en) * 1996-02-28 1997-09-05 Mitsubishi Chem Corp Composite material for vacuum thermal insulator and manufacture for vacuum thermal insulator
JP2004527747A (en) * 2001-03-23 2004-09-09 シュルンベルジェ ホールディングス リミテッドSchlumberger Holdings Limited Fluid property sensor
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